Alert archive / California / High Surf Advisories in 2025
High Surf Advisory 21, NWS Los Angeles, CA
NWS Los Angeles, CA issued this high surf advisory at Oct 23, 2025, 3:02 AM PDT for San Luis Obispo County, Santa Barbara County, California. It took effect at Oct 24, 2025, 3:00 AM PDT. It was in force for 4 days.
The area
The counties it named.
The facts
- Issued
- Oct 23, 2025, 3:02 AM PDT (10:02 UTC)
- In effect from
- Oct 24, 2025, 3:00 AM PDT
- Expired
- Oct 28, 2025, 9:00 AM PDT
- In force
- 4 days
- Issued by
- NWS Los Angeles, CA
Counties San Luis Obispo County, CA, Santa Barbara County, CA
The radar
The Vandenberg AFB radar (KVBX), 20 km from the middle of the area, began a volume at 10:02 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Oakland, CA (KOAK), launched 00:00Z, 10.0 hours before the alert went out and 354 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 802 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Los Angeles, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 10:12 PM PDT | Small Craft Advisory | LOX | 5 hr |
Nearby
High Surf Advisories in California, 2025Every high surf advisory in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.